Penobscot County, Maine

Penobscot County
Penobscot County Courthouse
Location within the U.S. state of Maine
Maine's location within the U.S.
Coordinates: 45°24′N 68°38′W / 45.40°N 68.63°W / 45.40; -68.63
Country United States
State Maine
Founded1816
Named afterPenobscot tribe
SeatBangor
Largest cityBangor
Area
  Total
3,557 sq mi (9,210 km2)
  Land3,397 sq mi (8,800 km2)
  Water160 sq mi (400 km2)  4.5%
Population
 (2020)
  Total
152,199
  Density45/sq mi (17/km2)
Time zoneUTC−5 (Eastern)
  Summer (DST)UTC−4 (EDT)
Congressional district2nd
Websitepenobscot-county.net

Penobscot County is a county in the U.S. state of Maine, named for the Penobscot people in Wabanakik. As of the 2020 census, the population was 152,199, making it the third-most-populous county in Maine. Its county seat is Bangor. The county was established on February 15, 1816, from part of Hancock County when the area was still part of Massachusetts. Penobscot County is home to the University of Maine.

Penobscot County comprises the Bangor, ME Metropolitan Statistical Area.